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Finding the Fourth Proportional to 13,417.94, 18,516.88 and 8,116.30

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Solution

The fourth proportional to 13,417.94, 18,516.88 and 8,116.30 is: 11,200.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,417.94 : 18,516.88 = 8,116.30 : x
  2. Step 2: Convert to fraction form
    13,417.94/18,516.88 = 8,116.30/x
  3. Step 3: Cross multiply
    13,417.94x = 18,516.88 × 8,116.30
  4. Step 4: Simplify right side
    13,417.94x = 150,288,553.14
  5. Step 5: Solve for x
    x = 150,288,553.14/13,417.94
  6. Step 6: Final answer
    x = 11,200.57

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.